1 inch per second (in/s) = 0.09144 kilometer per hour (kph).
Inch Per Second (in/s) is a unit of Speed used in Standard system.
Kilometer Per Hour (kph) is a unit of Speed used in Metric system.
Inch per second also can be marked as ips. Kilometers per hour also can be marked as km/h and Kilometres per hour(alternative British English spelling in UK).